Výsledky vyhledávání - "R D Pinheiro"

Akademický článek

Lepton flavor violation and collider searches in a type I + II seesaw model

Autor: Manoel M. Ferreira, Tessio B. de Melo, Sergey Kovalenko, Paulo R. D. Pinheiro, Farinaldo S. Queiroz

Publikováno v: European Physical Journal C: Particles and Fields, Vol 79, Iss 11, Pp 1-16 (2019)

Abstract Neutrinos are massless in the Standard Model. The most popular mechanism to generate neutrino masses are the type I and type II seesaw, where right-handed neutrinos and a scalar triplet are augmented to the Standard Model, respectively. In t

Externí odkaz: https://doaj.org/article/924f7368a1bf44a494d35804703b79d8

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Lepton Flavor Violation and Collider Searches in a Type I + II Seesaw Model

Autor: Paulo R. D. Pinheiro, Sergey Kovalenko, Manoel M. Ferreira, Farinaldo S. Queiroz, Tessio B. de Melo

Publikováno v: European Physical Journal C: Particles and Fields, Vol 79, Iss 11, Pp 1-16 (2019)
European Physical Journal

Neutrino are massless in the Standard Model. The most popular mechanism to generate neutrino masses are the type I and type II seesaw, where right-handed neutrinos and a scalar triplet are augmented to the Standard Model, respectively. In this work,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b97e4fdc56c6b88b1f578b84d3b0a94

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Contribuições para o conhecimento de anfíbios e répteis da Volta Grande do Xingu, norte do Brasil

Autor: J X Martins, L C C Cesca, T M Bilce, L Wronski, F C Poli, R D Pinheiro, T G Junqueira, Wilian Vaz-Silva, V Y Guimarães, A F N Gonzaga, M Penhacek, K C Pinto, R M Oliveira

Publikováno v: Brazilian Journal of Biology v.75 n.3 suppl.1 2015
Brazilian Journal of Biology
Instituto Internacional de Ecologia (IIE)
instacron:IIE
Brazilian Journal of Biology, Vol 75, Iss 3 suppl 1, Pp 205-218
Brazilian Journal of Biology, Volume: 75, Issue: 3 Supplement 1, Pages: 205-218, Published: AUG 2015
Brazilian Journal of Biology, Vol 75, Iss 3 suppl 1, Pp 205-218 (2015)

The region of Volta Grande do Xingu River, in the state of Pará, presents several kinds of land use ranging from extensive cattle farming to agroforestry, and deforestation. Currently, the Belo Monte Hydroelectric Power Plant affects the region. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1cbd6495bcbeab75b394f57f590f498
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842015000500205

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A compact 341 model at TeV scale

Autor: Alex G. Dias, C. A. de S. Pires, P. S. Rodrigues da Silva, P. R. D. Pinheiro

We build a gauge model based on the SU(3)_c x SU(4)_L x U(1)_X symmetry where the scalar spectrum needed to generate gauge boson and fermion masses has a smaller scalar content than usually assumed in literature. We compute the running of its abelian

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64e89001755c24eec9f61daef51b8b01
http://arxiv.org/abs/1309.6644

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Enhanced Yield and Physiological Performance of Mediterranean Grapevines through Foliar Kaolin Spray

Autor: Carlos Correia, A. A. Oliveira, Igor Severo Gonçalves, Aureliano C. Malheiro, H.M. Ferreira, Lia T. Dinis, Helder Fraga, João A. C. Santos, R. D. Pinheiro, Jorge Alberto Vieira Costa, José Moutinho-Pereira, Glória Pinto

Publikováno v: Procedia Environmental Sciences. 29:247-248

Future climate in the Mediterranean grapevine (Vitis vinifera L.) growing regions will be characterized by more severe summer conditions, with lower water availability, increased temperature and elevated solar irradiance, which may bring relevant cha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cd3f7117784997c3d6b8586637d4c97

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The minimal 3-3-1 model with only two Higgs triplets

Autor: P. R. D. Pinheiro, P. S. Rodrigues da Silva, J. G. Ferreira, C. A. de S. Pires

The simplest non-abelian gauge extension of the electroweak standard model, the $SU(3)_c\otimes SU(3)_L\otimes U(1)_N$, known as 3-3-1 model, has a minimal version which demands the least possible fermionic content to account for the whole establishe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::632d71c2e033fcc4dd76caff3b2310d5
http://arxiv.org/abs/1109.0031

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Gauge propagator and physical consistency of the CPT-even part of the Standard Model Extension

Autor: Paulo R. D. Pinheiro, Rodolfo Casana, A. R. Gomes, Manoel M. Ferreira

In this work, we explicitly evaluate the gauge propagator of the Maxwell theory supplemented by the CPT-even term of the SME. First, we specialize our evaluation for the parity-odd sector of the tensor $W_{\mu \nu \rho \sigma}$,\ using a parametrizat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::885d8888c66840cdb15002c840975138

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Stationary solutions for the parity-even sector of the CPT-even and Lorentz-covariance-violating term of the standard model extension

Autor: Paulo R. D. Pinheiro, A. R. Gomes, Manoel M. Ferreira, Rodolfo Casana

In this work, we focus on some properties of the parity-even sector of the CPT-even electrodynamics of the standard model extension. We analyze how the six non-birefringent terms belonging to this sector modify the static and stationary classical sol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8f7e39889abc75682823e1bb0989405

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